Best, worst places to live for those who love to drive fast

In the era of real-time data, we no longer have to debate questions such as which cities in the U.S. have the most traffic congestion.

A new study by the GPS company Tele Atlas, using the data recorded by car-equipped Tom Tom GPS units, shows some surprising facts, such as the most congested big city is not L.A. or New York, but Seattle.

Other interesting findings:

Like to go fast? The study reveals the states with the highest interstate highway average mph are:

Mississippi 70.1

New Mexico 70.0

Idaho 69.9

Utah 69.7

Alabama 69.6

Arizona 69.2

Nevada 68.7

South Carolina 68.7

Kansas 68.6

Arkansas 68.5

The fastest highway in the U.S.? I-15 in Utah and Nevada, averaging 77.67 mph. This may seem fast, but Tele Atlas reports that drivers in the unregulated stretches of the Autobahn in Germany typically drive over 100 mph.